Ballpoint pen



FIG. 1 is a front view of a ballpoint pen showing my new design, with a writing tip in a retracted position;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a magnified cross sectional view taken along line 7--7 in FIG. 1;

FIG. 8 is a magnified cross sectional view taken along line 8--8 in FIG. 1;

FIG. 9 is a magnified cross sectional view taken along line 9--9 in FIG. 1;

FIG. 10 is a magnified cross sectional view taken along line 10--10 in FIG. 1;

FIG. 11 is a perspective view thereof; and,

FIG. 12 is a right side view thereof with the writing tip in an extended position. 

The ornamental design for a ballpoint pen, as shown and described. 